WEST BRIDGEWATER - An unidentified teenager riding a skateboard suffered "significant head injuries" after he collided with another person riding a bicycle on South Street Monday afternoon, police said.

The teen was flown by medical helicopter to a Boston hospital after the accident, which occurred about 4:30 p.m., police said. His condition was not known Monday.

Authorities closed off a portion of Route 106 for a short time as the medical helicopter landed next to the fire station.

No other injuries were reported. The BCI unit of the Plymouth County sheriff's department responded to photograph the scene.

Maria Papadopoulos may be reached at mpapa@enterprisenews.com or follow on Twitter @MariaP_ENT.